It's simple enough to do yourself with your own icons. SVG is just in XML so you can affect different things with CSS (don't require. JavaScript)

Check out a responsive SVG Test I did a while ago: http://staticresource.com/ballr-dev/svg and change the width of the browser.

The code should be simple enough to look through. Me the most exciting part to ME about this is that their SVG's have semantic architecture within them, so instead of like #shape3249 it would describe the shape it was so when you call it in your code you can remember high at you're looking at.

The dealbreaker for me with these icons and why I won't use them: not open source. It's not about the money, I'll gladly pay for somebody to make great stuff, but if I can't work with the licence they're under I have no NEED to buy them.

Sorry, you misunderstood. Of course we can do it ourselves - that's nothing new.